Topside Ionospheric Electron Temperature Observations of the 21 August 2017 Eclipse by DMSP Spacecraft

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  • Marc R. Hairston
    Center for Space Sciences University of Texas at Dallas Richardson TX USA
  • Sebastijan Mrak
    Department of Electrical and Computer Engineering and Center for Space Physics Boston University Boston MA USA
  • W. R. Coley
    Center for Space Sciences University of Texas at Dallas Richardson TX USA
  • Angeline Burrell
    Center for Space Sciences University of Texas at Dallas Richardson TX USA
  • Ben Holt
    Center for Space Sciences University of Texas at Dallas Richardson TX USA
  • Michael Perdue
    Center for Space Sciences University of Texas at Dallas Richardson TX USA
  • Matthew Depew
    Center for Space Sciences University of Texas at Dallas Richardson TX USA
  • Robert Power
    Center for Space Sciences University of Texas at Dallas Richardson TX USA

書誌事項

公開日
2018-04-30
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#am
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2018gl077381
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>During the 21 August 2017 eclipse two separate DMSP spacecraft passed through the lunar penumbra at local afternoon (F16) and near local sunset (F17) in the topside ionosphere at an altitude of ~850 km. Measurements of the in situ electron temperature by the Langmuir probe on each spacecraft showed regions where the temperature decreased on the order of 500 to 1,000 K in the shadow. The patterns of these decreases were sporadic inside the shadow but generally showed the same overall shape in both passes. Comparing these patterns of temperature reductions with the projection of the gradient of the solar EUV radiation in the ionosphere suggests that these complex patterns are a result of the nonuniform distribution of the solar EUV radiation on the Sun at the time of the eclipse.</jats:p>

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